#!/usr/bin/env bash
. wvtest.sh
. wvtest-bup.sh
. dev/lib.sh

set -o pipefail

top="$(WVPASS pwd)" || exit $?
tmpdir="$(WVPASS wvmktempdir)" || exit $?
export BUP_DIR="$tmpdir/bup"

bup() { "$top/bup" "$@"; }

validate-local-and-remote-restore()
{
    local src="$1" dest="$2" cmp_src="$3" cmp_dest="$4"
    force-delete "$dest"
    WVPASS bup restore -C "$dest" "$src"
    WVPASS "$top/dev/compare-trees" "$cmp_src" "$cmp_dest"
    force-delete "$dest"
    WVPASS bup restore -r ":$BUP_DIR" -C "$dest" "$src"
    WVPASS "$top/dev/compare-trees" "$cmp_src" "$cmp_dest"
}


WVPASS cd "$tmpdir"

WVSTART "init"
WVPASS bup init
# Be independent of git defaults or a configured defaultBranch
git --git-dir "$BUP_DIR" symbolic-ref HEAD refs/heads/main
D=bupdata.tmp
WVPASS force-delete $D
WVPASS mkdir $D
WVPASS touch $D/a
WVPASS bup random 128k >$D/b
WVPASS mkdir $D/d $D/d/e
WVPASS bup random 512 >$D/f
WVPASS touch $D/d/z
WVPASS touch $D/d/z
WVPASS bup index $D
WVPASS bup save -t $D


WVSTART "restore"
WVPASS force-delete buprestore.tmp
WVFAIL bup restore boink
WVPASS touch "$tmpdir/$D/$D"
WVPASS bup index -u "$tmpdir/$D"
WVPASS bup save -n main /
WVPASS bup restore -C buprestore.tmp "/main/latest/$tmpdir/$D"
WVPASSEQ "$(ls buprestore.tmp)" "bupdata.tmp"
WVPASS force-delete buprestore.tmp
WVPASS bup restore -C buprestore.tmp "/main/latest/$tmpdir/$D/"
WVPASS touch $D/non-existent-file buprestore.tmp/non-existent-file # else diff fails
WVPASS diff -ur $D/ buprestore.tmp/
WVPASS force-delete buprestore.tmp
WVPASS echo -n "" | WVPASS bup split -n split_empty_string.tmp
WVPASS bup restore -C buprestore.tmp split_empty_string.tmp/latest/
WVPASSEQ "$(cat buprestore.tmp/data)" ""


(
    tmp=testrestore.tmp
    WVPASS force-delete $tmp
    WVPASS mkdir $tmp
    export BUP_DIR="$(pwd)/$tmp/bup"
    WVPASS WVPASS bup init
    WVPASS mkdir -p $tmp/src/x/y/z
    WVPASS bup random 8k > $tmp/src/x/y/random-1
    WVPASS bup random 8k > $tmp/src/x/y/z/random-2
    WVPASS bup index -u $tmp/src
    WVPASS bup save --strip -n foo $tmp/src

    WVSTART "restore /foo/latest"
    validate-local-and-remote-restore \
        /foo/latest  "$tmp/restore" \
        "$tmp/src/" "$tmp/restore/latest/"

    WVSTART "restore /foo/latest/."
    WVPASS force-delete "$tmp/restore"
    validate-local-and-remote-restore \
        /foo/latest/.  "$tmp"/restore \
        "$tmp"/src/ "$tmp"/restore

    WVSTART "restore /foo/latest/x"
    WVPASS force-delete "$tmp/restore"
    validate-local-and-remote-restore \
        /foo/latest/x  "$tmp"/restore \
        "$tmp"/src/x/ "$tmp"/restore/x/

    WVSTART "restore /foo/latest/x/"
    WVPASS force-delete "$tmp/restore"  
    WVPASS bup restore -C "$tmp"/restore /foo/latest/x/
    for x in "$tmp"/src/x/*; do
        WVPASS "$top/dev/compare-trees" "$x/" "$tmp/restore/$(basename $x)"
    done
    WVPASS force-delete "$tmp/restore"  
    WVPASS bup restore -r ":$BUP_DIR" -C "$tmp"/restore /foo/latest/x/
    for x in "$tmp"/src/x/*; do
        WVPASS "$top/dev/compare-trees" "$x/" "$tmp/restore/$(basename $x)"
    done

    WVSTART "restore /foo/latest/x/."
    WVPASS force-delete "$tmp/restore"
    validate-local-and-remote-restore \
        /foo/latest/x/.  "$tmp"/restore \
        "$tmp"/src/x/ "$tmp"/restore/
) || exit $?


WVSTART "save (no index)"
(
    tmp=save-no-index.tmp
    WVPASS force-delete $tmp
    WVPASS mkdir $tmp
    export BUP_DIR="$(WVPASS pwd)/$tmp/bup" || exit $?
    WVPASS bup init
    WVFAIL bup save -n nothing /
    WVPASS rm -r "$tmp"
) || exit $?


WVSTART "save disjoint top-level directories"
(
    # Resolve any symlinks involving the top top-level dirs.
    real_pwd="$(WVPASS resolve-parent .)" || exit $?
    real_tmp="$(WVPASS resolve-parent /tmp/.)" || exit $?
    pwd_top="$(echo $real_pwd | WVPASS awk -F "/" '{print $2}')" || exit $?
    tmp_top="$(echo $real_tmp | WVPASS awk -F "/" '{print $2}')" || exit $?

    if [ "$pwd_top" = "$tmp_top" ]; then
        echo "(running from within /$tmp_top; skipping test)" 1>&2
        exit 0
    fi
    D=bupdata.tmp
    WVPASS force-delete $D
    WVPASS mkdir -p $D/x
    WVPASS date > $D/x/1
    tmpdir2="$(WVPASS mktemp -d $real_tmp/bup-test-XXXXXXX)" || exit $?
    cleanup() { WVPASS rm -r "$tmpdir2"; }
    WVPASS trap cleanup EXIT
    WVPASS date > "$tmpdir2/2"

    export BUP_DIR="$tmpdir/bup"
    WVPASS test -d "$BUP_DIR" && WVPASS rm -r "$BUP_DIR"

    WVPASS bup init
    WVPASS bup index -vu $(pwd)/$D/x "$tmpdir2"
    WVPASS bup save -t -n src $(pwd)/$D/x "$tmpdir2"

    # For now, assume that "ls -a" and "sort" use the same order.
    actual="$(WVPASS bup ls -AF src/latest)" || exit $?
    expected="$(echo -e "$pwd_top/\n$tmp_top/" | WVPASS sort)" || exit $?
    WVPASSEQ "$actual" "$expected"
) || exit $?


WVPASS cd "$top"
WVPASS rm -rf "$tmpdir"
